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Marketable Securities
 12 Months Ended
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities Marketable Securities
Available-for-sale marketable securities as of December 31, 2023 and 2022 were as follows (in thousands):
December 31, 2023
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
U.S. Treasury securities$31,177 $4 $(2)$31,179 
Government-sponsored enterprises45,041 7 (5)45,043 
Corporate debt securities52,637 5 (15)52,627 
Total$128,855 $16 $(22)$128,849 
December 31, 2022
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Government-sponsored enterprises$32,812 $5 $(7)$32,810 
Corporate debt securities12,655 1 (4)12,652 
Total$45,467 $6 $(11)$45,462 
All of the Company's available-for-sale securities held at December 31, 2023 and 2022 had contractual maturities of less than one year. All of the Company’s available-for-sale marketable debt securities in an unrealized loss position as of December 31, 2023 and 2022 were in a loss position for less than twelve months.  Unrealized losses on available-for-sale debt securities as of December 31, 2023 and 2022 were not significant and were primarily due to changes in interest rates, including market credit spreads, and not due to increased credit risks associated with specific securities. Accordingly, no allowance for credit losses related to the Company's available-for-sale debt securities was recorded for the years ended December 31, 2023 and 2022. The Company does not intend to sell these investments and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be at maturity. The Company recorded interest income of $4.0 million, $1.7 million and $2.0 million during the years ended December 31, 2023, 2022 and 2021, respectively, which is included in interest and other income on the consolidated statements of operations and comprehensive loss.